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AIhunter2884
22.07.2019 •
Mathematics
Terrance has a summer job mowing lawns. his earnings for the first 9 weeks are given below $225, $280, $300, $200, $190, $250, $220, $205, $195 how much does terrance need to earn in week 10 to have earned an average of $250 per week?
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Ответ:
Ответ:
x= week 10 earnings
Solve for x to find week 10 earnings
($225 + $280 + $300 + $200 + $190 + $250 + $220 + $205 + $195 + x) ÷ 10 = $250
(2065 + x) ÷ 10= 250
multiply both sides by 10
2065 + x= 2500
subtract 2065 from both sides
x= $435 week 10 earnings
ANSWER: He must earn $435 in week 10 to have a ten week average of $250.
Hope this helps! :)
Ответ:
B
Explanation:
The theory of tectonic plates explains that large convectional currents occuring in the mantle(as a result of magma) are the reasons plates,and so continents,are moved. Note movement occurs in the boundary in between the plates.Hope this helps.